Recommendations Manga/webtoon/manhua/manhua with best art.

Kuroshitsuji

Spoiler: Black Butler

 

Sun Ken Rock

Spoiler

 

Bride of the water god
Tale of Felluah

 

Otoyomegatari or A Bride's Story is effing gorgeous! The details on every single thing UGHHH OH MY GOD

 

There's so much but I find each manga has it's own art style you develop a love for as you read it. For example, while I love Berserk's art, I would never substitute it for One Piece's art style, similarly with manga such as MARS (A more old type of shoujo art style), or even more realistic art from I Am A Hero. In HXH, you see a lot of simple panels, and then some incredibly detailed ones (when he is trying and not sick, or overworked) all of them have their own unique taste and wonder to it. The story combines with the art to give to a experience you can only find in that particular manga. So I guess I don't know, I'm open to all art styles...though even that has a limit since I really hate the art style of ecchi, Isekai stories. (Goblin Slayer, that Isekai shield manga).

Edit: Just remembered Threads of Times (Manhwa not webtoon) has rlly nice art and I think it was called Witch Hunter (again Manhwa) which I read a long time ago had this really clear cut bleach inspired art. And some good manhua art, Song Of the Long March

 

https://www.sinfest.net/ (don't worry, it's mostly rated G) - the weekly comic strips are generally cute, of course. It's the big, full colored Sunday strips that the cartoonist really goes all out.
Here are some random examples: one | two | three| four | five | six | seven | eight

 

That artist (Boichi) great. His current series (Dr Stone) is good bc he finally got a writer

Solo Leveling (another vote)

Iron Ladies

Girl Genius

 

I find terror man's art style good